Typewriting machine



Dec. 15, 1931. B HESS L836 848 TYFEWRITING MACHINE Filed Sept. 18, 19286 Sheets-Sheet l Dec. 15, 1931. E, B HESS TYPEWRI TING MACHINE FiledSept. 18, 1928 6 Sheets-Sheet 2 Dec. 15, 1931. E; B. HESS 1,836,848

TYPEWRITING MACHINE Filed Sept. 18, 1928 6 Sheets-Sheet 3 Dec. 15,,1931. E. B. HESS 1,836,848

TYPEWRITING MACHINE Filed Sept. 18, 1928 6 Sheets-Sheet 4 Dec. 15, 1931.E. B. HESS TYPEWRITINGMACHINE Filed Sept. 18, 1928 6 Sheets-Sheet Dec.15, 1931. 5,95 5 1,836,848

' TYPEWRITING MACHINE Filed Sept. 18, 1928 I 6 Sheets-Sheet 6 INVENTORBY 13 1119536 5; M988 ATTORN EYS' Patented Dec. 15, 1931 UNITED STATESPATENT OFFICE EDWARD B. HESS, 0F ORLANDO, FLORIDA, ASSIGNOR- T0 ROYALTYPEWRITER COMPANY, INC., OF NEW YORK, N. Y., A. CORPORATION OF NEW YORKTYPEWRITING MACHINE Application filed. September 18, 1928. Serial No.306,676.

An object of this invention is to provide a new and improved type actionfor type- Writing and similar machines which is simple in construction,rapid and eflicient in operation, will eliminate substantially all ofthe noise which results from the operation of the usual type action inpresent commercial machines, and at the same time will provide visiblewriting.

The type action, which is hereinafter more specifically described,consists of a plurality of type carriers which are mounted in a seg mentto normally hang downwardly by gravity in a vertical position. Thesecarriers are adapted to be swung to an operative printing position infront of the platen by connections with the usual key levers. Each typecarrier has mounted on the free end thereof a slidable typeblock whichis yieldably held against movement relative to the carrier. Theconnection between each type carrier and its associated key leverembodies a loose connection whereby the carrier may be swung to itsoperative printing position during the first part of the depression ofsaid key lever and whereby said key lever may be further depressed as aresult of said loose connection to actuate a single impression memberfor moving the type block relative to the carrier and against thetension of the spring to permit said block to perform its printingoperations.

A further object of the invention lies in the provision of a type actionsuch as specified above which may be substituted in a typewritingmachine without substantial modification of the other instrumentalities.The invention is illustrated as applied to astandard Royal typewritingmachine in which this action has been embodied with but little change inthe construction of the other instrumentalities of the machine, such asthe key board, the carriage, the platen shift mechanism, ribbonmechanism, escapement mechanism, and the like. Therefore certain ofthese instrumentalities have been purposely omitted from the drawings,as such instrumentalities have no direct bearing on this particularinvention.

Other objects of the invention will be apparent from the followingdetailed description and will be set forth in the appended claims.

In the drawings:

Figure 1 is a top plan view of a typewriting machine embodying myinvention;

Figure 2 is a view showing'in perspective the various parts of type armand type block assembly;

Figure 3 is a transverse sectional view of the machine showing the partsin their normal positions;

Figure 4 is a similar view but showing one of the type carriers in its 0erative or printing position and the associated key lever as beingpartially depressed;

Figure 5 is a view similar to Figure & but showing the impression memberin its effective working position, the type'block in printing position,and the associated key lever in its fully depressed position;

Figure 6 is an enlarged partial top plan view showing the relationbetweenthe segments and the type carrier;

Figure 7 is an enlarged detail view, partly in elevation and partly insection, showing a modified construction of the connection for theanchorage end of the toggle;

Figure 8 is a detail plan view of the connection shown in Figure 7, and

Figure 9 is a view similar to Figure 3 but showing a modified form ofconnection between the toggle and the key lever.

As above stated, the invention is illustrated as embodied in the Royalstandard machine, and there is shown the main frame A, the usualcarriage B carrying a platen C, and the 'u1s)ual keyboard with the usualkey levers The frame A includes a front plate 1, a top plate2, and aremovable cover plate 3. These two plates are disposed in front. of theplaten C and the rear ends thereof terminate in spaced relation to saidplaten. Carried by the under side of the top plate 2 is a horizontallydisposed arcuate segment 4 which is provided with a series of verticallydisposed and radially extending slots 5 for receiving the upper or pivotends of the type carriers or arms 6. An arcuate pivot rod 7 extendsthrough suitable openings in the seg ment 4 and forms a pivot for all ofthe type carriers or arms 6. The pivot 7 is disposed in front of theplaten C so as to permit the type carriers to normally hang verticallyby gravity and to permit of said carriers being separately swungupwardly into a horizontal printing position with their free ends infront of the platen. Attached to the under face of the top plate 2 is apad 8 which constitutes a stop for limiting the upward swinging movementof the carriers. An arcuate stop 9 is suitably supported by the mainframe for limiting the downward movement of the carriers.

The key levers D are preferably pivoted to a rod 10 which is locateddirectly under the platen C. In order to move a given type carrier 6upwardly to itsprinting position upon the first part of the depressionof the associated key levers D, however, I have pro-' vided a connectionbetween the carrier and the lever which includes a toggle which isindicated generally at E. This toggle inclues a long link 11 and a shortlink 12, said links being pivotallyconnected as at 13. The other end ofthe short link 12 is pivotally connected as at 14: to the type carrieror arm 6 at a point below the pivot 7 thereof when the carrier is in itsnormal osition. The anchorage end of the long lin r 11 is adapted toprogressively vary after the type carrier has reached its printingposition a distance determined by the depression of the key lever. Tothis end a horizontally disposed arcuate segment 15 is attached to themain frame A and is located below and in rear of the segment 4. Thesegment 15, like the segment 4, is provided with a series of verticallydisposed and radially extending slots 16 in which the anchorage ends ofthe respective toggles E are adapted to be moved. A. pin or rod 17 ismounted in the segment i 15 and extends across the slots 16.. Theanchorage end of each long link 11 is provided with a rearward extension18 having an arcuate slot 19 formed thereon, said slot being curved on aradius having for its center the pivot 14. Thus, after the type carrier6 has been moved upwardly to its horizontal or printing position uponthe first part of the depresslon of the associated key lever D, thetoggle E, which has been straightened during such movement of the keylever, is then capable of being swung about the pivot 14, whereby theanchorage end of said toggle will be moved forwardly and downwardly to aposition from that shown in Figure 3 to that shown in Figure 5. Thisswinging movement of the toggle E has no effect on the movement of thecarrier 6. In other words, the carrier 6 is held in its operative orhorizontal position during the swinging movement of the toggle E duringthe latter part of the depression of the key lever. In

the normal position of the parts, as shown in Figure 3, the rearwardextension 18 of the toggle extends upwardly and rearwardly, and themajor axis of the arcuate slot 19 extends in a downwardly and rearwardlydirection. In order to actuate the toggle E and conse quently the typecarrier 6 during the first part of the depression of the associated keylever D, I have provided a link 20 which is adapted to be connected atits upper end to any one of a plurality of holes 21 formed in the longlink 11 adjacent the extension 18, the lower end of the link 20 beingadapted to be connected to the key lever D through the medium of any oneof a plurality of openings 22 formed in said lever. A coil spring 23 isassociated with each type action, and the upper end of the spring isconnected to an anchorage plate 24: fixed to the segment 15, and thelower end of said spring is connected to an anchora e25 which is fixedto the link 20. The longitudinal axis of the spring 23 is inclineddownwardly and rearwardly and is disposed in substantial parallelismwith the major axis of the slot 19 of the toggle E. The spring 23therefore functions to yieldably retain the associated key lever D inits normal position, and also to retain the type carrier 6 and theconnections between the carrier and the key lever in their normalpositions.

Mounted on the free end of each type carrier or arm 6 is a type block Ffor sliding movements longitudinally of the arm. The type block isyieldably held against outward movement so that when the type arm ismoved to its operative horizontal position the type will be spaced fromthe platen a distance suflicient to place one or more sheets of papertherebetween. Means are provided for positively moving the type block toprint after the type arm has been moved to its horizontal printingposition. This printing movement of the type. block is accomplishedthrough the medium of an impression member Gr which is moved throughconnections .With all of the key levers during the latter part of thedepression ofany one key lever. The outer or free end of each type arm 6is provided with a foot 26 which extends in a direction substantially atright angles to the longitudinal axis of the type arm. The type block Fincludes a holder 27 and a type plate 28 which is attached to the holderby a screw 26" or other suitable means. The

holder 27 is of U-shaped construction and includes spaced side arms28-28 and a connection portion 29. The inner faces of the side arms 28are respectively formed with longitudinally extending guide grooves30-3O which receive ribs 3131 which extend laterally from the foot 26 ofthe type arm, said ribs 31 extending longitudinally of the type arm, orin a direction parallel to the major axis of said type arm. This rib eaers the outer ends of the side arms 2828 and forms a closure for saidend. Thistype plate 28 is adapted to normally lie against the outer endof the foot 26 of said type arm, and consequently the type block F isheld by 'such engagement against further movement towards the pivot ofthe type arm. -A coil spring 32 is disposed within the holder 2% betweenthe connecting portion 29 thereof and the foot 26, and this springserves to ll yieldably retain the type block against further or printingmovement.

The impression member G is slidably mounted in a bore 33 formed in thecover plate The bore 33-extends fore and aft N of the machine and iscentrally located relative to the series of type carriers 5, Theimpression member G is formed of a rod w ch extends forwardly from therear end of n cover plate 3 to a point substantially above the segment15. The impression member is adapted to be reciprocated through themedium of a connection which is common to all of the key levers D. Thisconnection includes a bell crank lever pivotally connected as at 38 tothe upper end of a vertical link 39, the lower end of said link beingpivotally connected as at 40 to a universal frame H which is fulcrumedon the main frame A. through the medium of a cross rod 41. The universalframe H is disposed below and in spaced relation to the key levers whensaid levers are in their normal positions. A spring 42 has one endconnected to the universal frame H and the other end P to an anchoragefixed to the stop 9, and this spring functions to yieldably retain theuniversal frame H against downward movement under the influence of anyone key lever. The universal frame H is provided with an upstanding arm43 which is connected to the usual universal bar (not shown) whichcontrols the movement of the carriage escapement mechanism. The bellcrank lever 34 is pivoted at its anchor as at 44 to a support 45 whichis adapted to be manually adjusted fore and aft of the machine, or, inother words, in a direction parallel to the reciprocatory movement ofthe impression mem ber Gr. For this purpose thesupport 45 is mounted inan opening 46 formed in the front plate 1 of Which machine frame A, andan adjusting screw 47 is carried by the support for cooperation with theplate 46 to retain the support 45' in any position of adjustment. Bymeans of the adjustable support-45 the fulcrum of the bell crank lever34 ma be readil adjusted, and, as a result, the e ective wor ingposition of the free or rear end of the impression member G may bevaried. By means of this adjustment the extent of movement of theprinting block may be correspondingly varied in order to meet practicalrequirements relative to different thicknesses or numbers of papersbeing fed around the platen C. Tn other words, when the support 45 ismoved forwardly, the fulcrum 44 of the bell crank lever will becorrespondingly moved forwardly, and, as a result, the path ofreciprocation of the im pression member G: will be bodily movedrearwardly a corresponding amount. This will permit of an increasednumber of sheets to be fed around the platen between the platen and thetype block. l l hen it is desired to employ a minimum number of sheets,the support 45 is adjusted so as to move the same rearwardly and therebycorrespondingly move the effective working position of the impressionmember It will be desirable to reduce the amount of friction between thewalls of the arcuate slot 19 and the pivot pin 1'? of the toggle E, andto this end T have provided an antifriction roller as shown in Figures 7and 8. ln these figures the arm E is provided with a forward extension18 having a slightly enlarged arcuate slot 48 formed therein. The pivotpin or rodl'l is provided with an antifriction roller 49 which rides inthe slot 48, and this roller is provided with side flanges 50 whichfunction to properly guide the anchorage end of the toggle E during itsswinging movement.

In order to create a somewhat smoother type action, ll may employ asecondary lever 51 in the link connection between the toggle 1E and theassociated key lever D. There is of course one of the secondary levers51 employed for each type action, and these secondary levers 51 aretherefore pivoted at their front ends to a rod or pivot pin 52 which issupported in a horizontally disposed arcuate segment 53 carried by themain frame A, said levers 51 moving in vertically disposed and radiallyextending slots 54 formed in said segment 53. The rear end of each lever51 is pivotally connected to the lower end of a link 54, the upper endof the rue link being pivotally connected to one of the r v nected toone of the openings 22 in the asso-.

ciated key lever D.

In operation, assuming the parts to be in the position shown in Figure3, it will be apparent that, upon the first part of the depression of apredetermined key lever D, the link 20 will cause the toggle E to befirst straightened and simultaneously the type and slid rearwardly alongthe type arm to' print. During the latter part of the depression of saidkev lever, the universal frame H will be rocked thereby, and, throughthe medium of link 39, the bell crank lever 34 will be oscillated, andconsequently the impression member G will be moved rearwardly to effectthe printing operation by the type block, as previously described.During this latter part of the depression movement of the key lever, thetoggle E will be swung on its pivot 14, the anchorage end of the toggleprogressively varying downwardly to permit'of the impression member Gand the operating connections therefor being moved without straining theconnections between the type carrier 6 and the key lever D. After aprinting operation has been completed, the key lever D'will return toits normal position by means of the spring 23, and simultaneously thetype carrier 6 will swing downwardly to its normal position. At the sametime the spring 42 will return the universal frame H to its normalposition, and consequently the impression member G will like- I wise bereturned to its normal position.

The type plate 28 is provided with a centrally disposed attaching flange28 which is positioned between the side arms 28, 28 of the holder 27 andabove the grooves 30 thereof, and is fixedly secured in such position bythe screw 26.

The end of the plunger G is provided with a reduced extension 9, whichduring printing movement will engage in a correspondingly sized openingformed in the connecting portion 29 of the holder F and thereby guidethat portion of the holder in a straight line and also act as a lock tohold the type bar upwardly against the pad 8 to insure accuratealinement of the type carrier. In other words, the reduced end portion 9of. the plunger cooperates with the type bar to hold the same in perfectvertical and lateral alinement.

What I claim is:

l. A type action comprising, in combina tion, a movable type arm havinga type block mounted for relative movements at one end, a key lever, andmeans actuated by the key lever for first swinging the type arm toprinting position and thereafter moving said type block to print, saidmeans including a toggle having one end pivoted to the type arm andhaving its anchorage-end progressively varying after the arm has reachedits printing position a distance determined by the depression of the keylever, and a connection between the toggle and the key lever.

the short link being pivotally connected to the type arm, and a linkconnecting the long link of the toggle with the key lever.

3. A type action comprising in combination, a movable type arm having atype block mounted for relative movements at one end, a key lever, andmeans actuated by the key lever for first swinging the type arm toprint-. ing position and thereafter moving said type block to print,said means including a toggle embodying relatively short and long links,the free end of the short link being pivotally connected to the typearm, the anchorage end of the long link progressively varying after thearm has reached its printing position a distance determined by thedepression of the key lever, and a connection between the long link ofthe toggle and the key lever.

4. A type action comprising in combination, a movable type arm having atype block mounted for relative movements at one end, a key lever, andmeans actuated by the key lever for first swinging the type arm toprinting position and thereafter moving said type block to print, saidmeans including a toggle having one end-pivoted to the type arm andhaving its anchorage end progressively varying after the arm has reachedits printing position a distance determined by the depression of the keylever, a spring for yieldably retaining the anchorage end of the toggleagainst said progressive varying, and a connection between the toggleand the key lever.

5. A type action comprising in combination, a movable type arm having atype block mounted for relative movements at one end, a key lever, andmeans actuated by the key lever for first swinging the type arm toprinting position and thereafter moving said type block to print, saidmeans including a toggle embodying relatively short and long links, thefree end of the-short link being pivotally connected to the type arm,the anchorage end of the long link progressively varying after the armhas reached its printing position a distance determined by thedepression of the key lever, a spring for yieldably retaining theanchorage end of the toggle against said progressive varying, and a linkconnecting the long link of the toggle with the key lever.

6. A type action comprising in combination, a movable type arm having atype block ing position and thereafter moving said type block to print,said means including a toggle embodying relatively short and long links,the free end of the short link being pivotally connected to the typearm, the anchorage end of the long link progressively varying after thearm has reached its printingposition a distance determined by thedepression of the key lever, a spring for yieldably retaining theanchorage end of the toggle against said progressive varying, and aconnection beeween the long link of the toggle and the key ever.

'2. A type action comprising in combination, a movable type arm having atype block mounted for relative movements at one end, a key lever, andmeans actuated by the key lever for first swinging the type arm toprinting position and thereafter moving said type block to print, saidmeans including a toggle having one end pivoted to the type arm andhaving its anchorage end mounted to swing in an arc concentric with thepivot connecting the toggle and the type arm a distance determined bythe depression of the key lever, and a connection between the toggle andthe key lever.

8.. A type action comprising in combination, a movable type arm having atype block mounted for relative movements at one end, a key lever, andmeans actuated by the key lever for first swinging the type arm toprinting position and thereafter moving said type block to print, saidmeans including a toggle having one end pivoted to the type arm andhaving its anchorage end mounted to swing in an arc concentric with thepivot connecting the toggle and the type arm a distance determined bythe depression of the key lever, a spring for yieldably retaining theanchorage end of the toggle against swinging, and a connection betweenthe toggle and the key lever.

9. A type action comprising in combination, a movable type arm having atype block mounted for relative movements at one end, a key lever, andmeans actuated by the key lever for first swinging the type arm toprinting position and thereafter moving said type block to print, saidmeans including a toggle embodying relatively short and long links, thefree end of the short link being pivotally connected to the type arm,the anchorage end of the long link including a pin and slot connectionfor permitting the toggle to swing in an arc concentric with the pivotconnecting the short link and the type arm a distance determined by thedepression of the key lever, and a link connecting the long link of thetoggle with the key lever.

10. A type action comprising in combination, a movable type arm havinga. type block mounted for relative movements at one end, a key lever,and means actuated by the key lever for first swinging the type arm toprinting position and thereafter moving said type block to print, saidmeans including a toggle embodying relatively short and long links, thefree end of the short link being pivotally connnected to the type arm,the

anchorage end of the long link including a pin and slot connection forpermitting the toggle to swing in an arc concentric with the pivotconnecting the short link and the type arm a distance determined by thedepression of the key lever, a spring for yieldably retaining theanchorage end of the toggle against movement, and a link connecting thelong link of the toggle with the key lever.

11. A type action comprising in combination, a movable type arm having atype block mounted tor relative movements at one end, a key lever, andmeans actuated by the key lever for first swinging the type arm toprint-- ing position and thereafter moving said type block to print,said means including a toggle having one end pivoted to the type arm andhaving its anchorage end progressively varying after the arm has reachedits printing position a distance determined by the depression of the keylever, a spring for yieldably retaining the anchorage end of the toggleagainst said progressive varying, the spring being expansible in adirection substantially parallel with the direction of movement of theanchorage end of the toggle, and a connection between the toggle and thekey lever.

12. A type action comprising in combination, a movable type arm having atype block mounted for relative movements at one end, a key lever, andmeans actuated by the key lever for first swinging the type arm toprinting position and thereafter moving said type block to print, saidmeans including a toggle having one end pivoted to the type arm andhaving its anchorage end mounted to ewing ,in an arc concentric with thepivot connecting the toggle and the type arm a distance determined bythe depression of the key lever, a spring for yieldably retaining the anchorage end of the toggle against swinging, the spring being expansiblein a direction substantially parallel to the path of swinging movementof the anchorage end of the toggle, and a connection between the toggleand the key lever.

13. A type action comprising in combination, a movable type arm having atype block mounted for relative movements at one end, a key lever, andmeans actuated by the key lever for first swinging the type arm toprinting position and thereafter moving said type block to print, saidmeans including a tog 1e embodying relatively short and long lin s, thefree end of the short link bein pivotally connected to the type arm, theanc orage end of the long link including a pin and slot conlever, thespring being expansible in a direction substantially parallel to themajor axis of the slot of said connection, and a link connecting thelong link of the toggle with the I key lever.

14. A type action comprising in combination a movable type arm having atype block mounted for relative movement at one end, a key lever, meansfor moving the type arm to printing position during the first part ofthe depression of the key lever, and means -including a movableimpression member, and means for moving the impression member to movethe type block during the latter part of the depression of the key leverand while the type arm is in printing position, said impression movingmeans including a bell crank lever having one arm directly connected tothe impression member, a frame movably mounted under the key lever andnormally spaced therefrom, and a connection between the other arm of thebell crank lever and said movable frame.

15. A type action comprising in combination a movable type arm having atype block mounted for relative movement at one end, a key lever, meansfor moving the type arm to printing position during the first part ofthe depression of the key lever, and 'means including a movableimpression member, and means for moving the impression member to movethe type block during the latter part of the depression of the key leverand while the type arm is in printin position, said impression movingmeans including a bell crank lever having one arm directly connected tothe impression member, a frame movably mounted under the key lever andnormally spaced therefrom, and a connection between the other arm of thebell crank lever and said movable frame, andmeans operatively connectedwith said bell crank lever to vary the effective working position of theimpression member.

16. Atype action comprising in combination, a movable type arm having atype block mounted for relative movement at one end, a key lever, meansfor moving the type arm to printing position during the first part ofthe depression of the key lever, and-means including a movableimpression member, and a bell crank lever connected thereto and to thekey lever for moving the impression member to move the type block duringthe latter part of the depression of the key lever and while the typearm is in printing position, and means for adjusting the fulcrum of thebell crank lever in a direction parallel to the path of movement of theimpression member to vary the effective working position of said member.

17. In a type action, a movable type arm having a foot at one endextending in a plane at right angles to the longitudinal axis of thearm, and a U-shaped type block mounted on said foot to slidelongitudinally of the arm, said block including side arms and aconnecting portion, the side arms being disposed on opposite sides ofthe foot and the connecting portion being disposed adjacent the innerend of the foot, a type plate attached to the block and extending acrossthe outer ends thereof for direct contact with the outer end of the footto limit the inward movement of the type block, and cooperating meansbetween the foot and the block for guiding the block longitudinally ofthe arm.

18. In a type action, a movable type arm having a foot at one endextending in a plane at right angles to the longitudinal axis of thearm, and a U-shaped type block mounted on said foot to slidelongitudinally of the arm, said block including side arms and aconnecting portion, the side arms being disposed o'n'opposite sides ofthe footand the connecting portion being disposed adjacent the inner endof the foot, a type plate attached to the block and extending across theouter ends thereof for direct contact with the outer end of the foot tolimit the inward movement of the type block, a spring interposed betweenthe connecting portion of the block and the foot for yieldably retainingthe block against outward movement relative to the type arm, andcooperating means between the foot and the block for guiding the blocklongitudinally of the arm.

19. In a typewriting machine the combination with a platen of aplurality of type arms each pivoted to normally hang downwardly in frontof the platen and adapted to be swung upwardly to an operativehorizontal'printing position with its free end in front of the platen, amovable type block mounted on the free end of each type arm, a pluralityof key levers, operative connections between the respective key leversand type arms for moving a predetermined arm to its operative horizontalprinting position during the first portion of the depression of itsassociated key lever, each ofsaid connections including a toggle havingone end pivoted to the type arm and having-its anchorage endprogressively varying after the arm has reached its printing posit-ion adistance determined by the depression of the key lever, and a connectionbetween the toggle and the key lever, and means operated by the same keylever during the latter part of its depression and while said'arm is inits operative position to move'the type block to prmt.

29. In a typewriting machine the combinat1on with a platen of aplurality of type arms each pivoted to normally hang down- Wardly infront of the platen and adapted to be swung upwardly to an operativehorizontal printing position with its free end in front of the platen, amovable type block mounted on the free end of each type arm, a pluralityof key levers, operative connections between the respective key leversand type arms for moving a predetermined arm to its operative horizontalprinting position during the first portion of the depression of itsassociated key lever, each of said connections including a toggle havingone end pivoted to the type arm and having its anchorage endprogressively varying after the arm has reached its printing position adistance determined by the depression of the key lever, and a connectionbetween the toggle and the key lever, and means operated by the same keylever during the latter part of its depression and while the arm is inits operative printing position to move the type block to print, saidmeans including a reciprocatory impression member for mov ing the typeblock to print, a universal frame cooperating with said key lever, andoperative connections between the universal frame and said impressionmember.

'21. In a typewriting machine the combination with a platen of aplurality of type arms each pivoted to normally hang downwardly in frontof the platen and adapted to be swung upwardly to an operativehorizontal printing position with its free end in front of the platen, amovable type block mounted on the free end of each type arm, a pluralityof key levers, operative connections between the respective key leversand v type arms for moving a predetermined arm to its operativehorizontal printing position during the first portion of the depressionof its associated key lever, each of said conplurality of key levers,operative connec-,.

its associated key lever, each of said connections including a togglehaving one end pivoted to the type arm and having its anchor age endprogressively varying after the arm has reached its printing position adistance determined by the depression of the key lever, and a connectionbetween the toggle and the key lever, means operated by the same keylever, during the latter part of its depression and while said arm is inits operative position to move the type block to print, said meansincluding a reciprocatory impression member for moving the type block toprint, a bell crank lever pivotally connected to the impression member,and an operative connection between the bell crank lever and theuniversal frame, and means for bodily adjusting'the bell crank lever tovarythe efiective working position of the impression member.

In testimony whereof, l have hereunto subscribed my name.

riovvann B. mass,

nections including a toggle having one end pivoted to the. type arm andhaving its anchorage end progressively varied after the arm has reachedits printing position a distance determined by the depression of the keylever, and a connection between the toggle and the key lever, and meansoperated by thesame key lever during the'latter part of its depressionand while said arm is in its operative position to move the type blockto print, said means including a reciprocatory impression member formoving the type block to print, a bell crank lever pivotally connectedto the impression member, andan operative connection between the bellcrank lever and the universal frame.

22. In a typewriting machine the combination with a platen of aplurality of type arms each pivoted to normally hang downwardly in frontof the platen and adapted to be swung upwardly to an operativehorizontal printing position with its free end in front of the platen, amovable type block mounted on the free end of each type arm, a

